EP 4016219 A1 20220622 - METHOD FOR RAPID TRANSITIONING OF POLYOLEFIN PROCESSES FROM ONE PRODUCT TO ANOTHER
Title (en)
METHOD FOR RAPID TRANSITIONING OF POLYOLEFIN PROCESSES FROM ONE PRODUCT TO ANOTHER
Title (de)
VERFAHREN ZUM SCHNELLEN ÜBERGANG VON POLYOLEFINPROZESSEN VON EINEM PRODUKT ZU EINEM ANDEREN
Title (fr)
PROCÉDÉ DE TRANSITION RAPIDE DE TRAITEMENTS DE POLYOLÉFINE D'UN PRODUIT À UN AUTRE
Publication
Application
Priority
- US 201313930072 A 20130628
- EP 14817708 A 20140623
- US 2014043572 W 20140623
Abstract (en)
The present invention relates to a method for transitioning a gas-phase polyolefin reactor system. The gas phase polyolefin reactor system comprises- a gas phase polyolefin reactor (160),- a heat exchanger (170),- a separator tank (175), and- a compressor (150).An input stream (105) comprising a reactant component is supplied from a header to the gas-phase polyolefin reactor (160) through a steady state control valve (110) or through a bypass valve (115) and a high-flow valve (130). During normal operation the input stream (105) comprising the reactant component is directed through a steady-state control valve (110) to the low-pressure side of the compressor (150). During a transition the input stream (105) comprising the reactant component is passed to the reactor through the by-pass valve (115) and the high flow valve (130) to the high pressure side of the compressor (150).
IPC 8 full level
G05B 21/00 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); C08F 2/01 (2006.01); C08F 2/34 (2006.01); C08F 110/06 (2006.01); G05D 1/08 (2006.01); G05D 7/00 (2006.01); G06F 9/455 (2018.01)
CPC (source: EP US)
B01J 19/0006 (2013.01 - US); B01J 19/0033 (2013.01 - EP US); B01J 19/24 (2013.01 - US); C08F 2/01 (2013.01 - EP US); C08F 2/34 (2013.01 - EP US); C08F 110/06 (2013.01 - EP US); B01J 2219/00069 (2013.01 - EP US); B01J 2219/00164 (2013.01 - EP US); B01J 2219/00186 (2013.01 - EP US); B01J 2219/002 (2013.01 - EP US); B01J 2219/00218 (2013.01 - EP US); B01J 2219/00231 (2013.01 - EP US); B01J 2219/24 (2013.01 - US)
Citation (search report)
- [A] EP 0124333 B1 19890208
- [A] US 2004063871 A1 20040401 - PARRISH JOHN R [US], et al
- [A] US 2012283395 A1 20121108 - HENDRICKSON GREGORY G [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2015005462 A1 20150101; US 8986618 B2 20150324; CN 105359043 A 20160224; CN 105359043 B 20181019; EP 3014370 A1 20160504; EP 3014370 A4 20170315; EP 3014370 B1 20211013; EP 4016219 A1 20220622; US 2015147234 A1 20150528; US 2015148506 A1 20150528; US 9273155 B2 20160301; US 9371404 B2 20160621; WO 2014209838 A1 20141231
DOCDB simple family (application)
US 201313930072 A 20130628; CN 201480035846 A 20140623; EP 14817708 A 20140623; EP 21200143 A 20140623; US 2014043572 W 20140623; US 201514614102 A 20150204; US 201514614631 A 20150205